Hello to all,
Well thanks to the generosity of Eric and a different ESR meter circuit provided by Nigel I have built my new ESR meter and it actually does something!
Not everything went as planned, for one thing I could not find any 470pF 1% polystyrene caps and had to substitute the ceramic ones I had. Having finally souced a 28v 24mA bulb for the circuit that the author states is 170r when cold I was a little dismayed as mine measured only 130r - I tried 2 of them as well.
Also I had to order some 1r resistors, the only ones I could find were 1w and they sadly measure 1.4r, I don't know how relevant this is?